Unable to import ytf files into Zmodeler3

[jwkt05]

I just bought the license in order to make sure I am not resticted in importing.
Whenever I try to import the import box just turn grey. Any help would be appreciated. Thanks.

[Oleg]

This .yft file is locked by its author, you can't import it into ZModeler.

You can import stock game files and other files that were not locked during export.